Index
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05
787
linear and structured programs, 136
memory card, 99
organization block (OB), 138
password protection, 154
priority class, 66
resetting the start values of a DB, 644
restoring the status of a code block, 34
Program card
configure the startup parameters, 102
creating, 105
inserting into CPU, 100
order number, 758
overview, 99
Program control (SCL), 209
CASE, 211
CONTINUE, 214
IF-THEN, 210
REPEAT, 214
RETURN, 216
Program editor
capturing the status of a code block, 34
capturing values of a DB, 644
monitor, 643
resetting the start values of a DB, 644
restoring the status of a code block, 34
status, 643
Program execution, 61
Program information
Program structure, 138
calling code blocks, 138
Programming
adding inputs or outputs to LAD or FBD
instructions, 31
binding to a CPU or memory card, 156
block calls, 61
calling code blocks within the user program, 138
comparing and synchronizing code blocks, 641
counters, 178
data block (DB), 61
drag and drop between editors, 33
expandable instructions, 32
favorites, 29
FBD (function block diagram), 145
function (FC), 140
initial value of an FB, 140
inserting instructions, 29
instance data block (DB), 140
LAD (ladder), 144
linear program, 136
operating modes of the CPU, 63
organization block (OB), 138
PID overview, 324
PID_3STEP, 331
PID_Compact, 328
PID_Compact algorithm, 325, 328
power flow (EN and ENO), 152
priority class, 66
PtP instructions, 560
RD_LOC_T (read local time), 235
RD_SYS_T (read system time), 235
run time meter, 237
SCL (Structured Control Language), 145, 146, 147
structured program, 136
types of code blocks, 61
unplugged modules, 38
unspecific CPU, 111
valid FC, FB, and DB numbers, 61
WR_SYS_T (write system time), 235
Programming user-defined Web page language
switch, 523
Project
access protection, 153
binding to a CPU or memory card, 156
comparing and synchronizing, 641
empty transfer card, 107
lost password, 107
program card, 105
protecting a code block, 154
restricting access to a CPU, 153
transfer card, 102
Project view, 28
Protection class, 661
Protection level
binding to a CPU or memory card, 156
code block, 154
CPU, 153
lost password, 107
Protocol
communication, 531
freeport, 531
ISO on TCP, 399
Modbus, 531
PROFINET RT, 399
UDP, 399